X-Git-Url: http://git.tdb.fi/?p=libs%2Fcore.git;a=blobdiff_plain;f=source%2Ftime%2Ftimestamp.h;fp=source%2Ftime%2Ftimestamp.h;h=da4e457f8b1be6be0c4aa619274c81be80b183dc;hp=0000000000000000000000000000000000000000;hb=e1ea831a640fba534e7e42e399f04cdf681ef8d3;hpb=0bcb8d4d6f33cbdad7b921cac787740bfe8e212e

diff --git a/source/time/timestamp.h b/source/time/timestamp.h
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+++ b/source/time/timestamp.h
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+/*
+This file is part of libmspframework     
+Copyright © 2006  Mikko Rasa, Mikkosoft Productions
+Distributed under the LGPL
+*/
+#ifndef MSP_TIME_TIMESTAMP_H_
+#define MSP_TIME_TIMESTAMP_H_
+
+#include <stdint.h>
+#include "timedelta.h"
+
+namespace Msp {
+namespace Time {
+
+/**
+Represents a moment in time, such as the last tick.  This class is NOT intended
+to be used for storing arbitary user-defined times, I'll add a DateTime class
+if the need arises.
+*/
+class TimeStamp
+{
+public:
+	/**
+	Construct a TimeStamp that represents an arbitarily distant point in the
+	past.  It's guaranteed to be less than any valid timestamp.
+	*/
+	TimeStamp(): usec(0) { }
+
+	/**
+	Constructs a TimeStamp from a plain number.  The purpose of this is to allow
+	serialization together with the raw() function.
+	*/
+	explicit TimeStamp(int64_t u): usec(u) { }
+
+	/**
+	Returns the raw number stored inside the TimeStamp.  This should only be used
+	for serialization and the result should not be interpreted in any way.
+	*/
+	int64_t   raw() const { return usec; }
+
+	TimeStamp operator+(const TimeDelta &t) const  { return TimeStamp(usec+t.raw()); }
+	TimeStamp &operator+=(const TimeDelta &t)      { usec+=t.raw(); return *this; }
+	TimeStamp operator-(const TimeDelta &t) const  { return TimeStamp(usec-t.raw()); }
+	TimeStamp &operator-=(const TimeDelta &t)      { usec-=t.raw(); return *this; }
+	TimeDelta operator-(const TimeStamp &t) const  { return TimeDelta(usec-t.usec); }
+	bool      operator>=(const TimeStamp &t) const { return usec>=t.usec; }
+	bool      operator>(const TimeStamp &t) const  { return usec>t.usec; }
+	bool      operator<=(const TimeStamp &t) const { return usec<=t.usec; }
+	bool      operator<(const TimeStamp &t) const  { return usec<t.usec; }
+	bool      operator==(const TimeStamp &t) const { return usec==t.usec; }
+	bool      operator!=(const TimeStamp &t) const { return usec!=t.usec; }
+	operator bool() const                          { return usec>0; }
+
+	static TimeStamp from_unixtime(time_t t) { return TimeStamp(t*1000000LL); }
+private:
+	int64_t usec;
+};
+
+} // namespace Time
+} // namespace Msp
+
+#endif